Speed Converter

How to use this Speed Converter

Converting speeds is simple with our free online tool. Enter the value you want to convert, select the From unit (m/s, km/h, mph, or knots), and choose the To unit.

The conversion happens automatically. You can also load common speeds like walking, cycling, or car speeds with a single click, or copy the result to your clipboard.

What this speed converter does

• ✓Four speed units — Convert between m/s, km/h, mph, and knots.
• ✓Accurate conversions — Uses precise mathematical formulas with standard conversion factors.
• ✓Common speeds — Quickly load typical speeds for walking, cycling, cars, planes, and more.
• ✓Swap units — Easily swap between From and To units.
• ✓Copy result — Copy the converted value with one click.
• ✓100% client-side — All processing happens in your browser. No data is sent to servers.

Common use cases

• •Convert speed limits between km/h and mph when traveling internationally
• •Calculate wind speeds for aviation and maritime navigation
• •Convert running and cycling speeds for fitness tracking
• •Calculate vehicle performance and acceleration metrics
• •Convert scientific speed measurements in physics experiments
• •Convert weather and storm speeds between different units

Frequently Asked Questions